Flight attachment for conveyer-chains



R. W. PATTEN, D. GYDAVIS AND E. L. BURLEIGH.

v FLIGHT ATTACHMENT FOR CONVEYER CHAINS APPLICATION FILED MAR. 8, 191B.RENEWED FEB. 6, 1920. 1,335,697.

Patented Mar. 30,1920.

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I s ecificati n o Le -jj Patented Mar. 30,1920.

" Original application filed December 22, 1917, Serial 370.2%,466.Divided and'this application filed-'March 8, 1918, Serial No. 221,303.Renewed February 6, 1920. Serial No. 356,420.

' Attachments for Conveyer-Chains; and we.

To all whom it may concern: I I

Be it known that we, RALPH W. PATTEN, DAVID G. DAVIS, and EDWARD L.BURLEIGH, citizens of the United States, residing at Scranton, in thecounty ofLackawanna and State'of Pennsylvania, have invented cer-- tainnew and useful Improvements in Flight do hereby declare the following tobe afull,

clear, and exact description of the invention, such as will enableothers skilledin. the art to which it appertains to make and use thesame. I V

i This invention relates to chain-conveyors, and particularly to flightand link structures thereof.

In the making of repairs and replacement,

' of parts and the adjustment'of thesame,

much valuable time is. lost. because. of the necessity of entirelyremoving a link or linksfrom a chain therefrom, and again because it isnecessary to slacken up the. chain-belt by considerably running up thefoot or tightening wheel to permit the removal of a. link. i

It is, therefore, among the more important objects of this invention toprovide a chain and flight structure whereby the time: taken for makingvarious adjustments. or replacement of parts is materially shortenedythenecessity of entirely removing a .hnk with a flight is entirelyeliminated, and the desired security and rigidity of connection isaccomplished. v

With these, .and other objects in View as will be readily manifest tothose skilled in the art, the invention consists of the construction,combination, details, and the arrangement of parts as more fully setforth in the following specification wherein one embodiment of theinvention is described as shown in the accompanying drawing, in whichFigure 1 is a bottom plan view of two links and a flight.

Fig. 2 is a section on line 2-2 of Fig. 1. Fig. 3 is a side elevation ofFig. 1. Fig. 4 is a detail front perspective view of the chair.

The chain is made of a plurality of links I shown here as comprising acenter, female block link 2 of oblong elevation with rounded ends 3, andsides indented at 5, the shoulders 6 being square, and as outsidecomplementary paired link sections 7-. The

. sections? are duplicate, and, therefore, are interchangeable, and eachis of such con struction that it may be" reversed end for end ifdesired. 4 v 1 Each of the center or block links 2 and the side linksections 7 are of hollow form; that is, each is provided with aslot-of-slots 8 of suitable length and diameter to receive a; cross-pin10,. having a diameter. approxi mating the width of the slots 8, "thispin. having at each end a T-head 11, which are parallel to each other,and extend in a com mon plane diametrically across the axis. of

thepin 10, the length of the headsll being here shown as substantially.equal to the width of the link components of the chain, the ends of theoutside or male link section 7 being provided with respective seats 12of a width substantially equal to the width. of the T-heads 11 of thepivot pins, and into which the projecting portion of the heads areadapted to snugly seat when the rounded ends of each of the links 2 and7 are broughtinto concentric relation as by the pulling rapid removal ordismounting of a conve eri flight from a'conveyer chain, and tot at endour invention consists 1n the-provlsion of a unitary or integral chair,generally in dicated at15, and comprising an upright flange or seat 16,from which rearwardly projects a base plate 17 adapted to rest upon thetop of oneof the center or female block links and having downwardlyprojecting parallel spaced ears 18 of a depth below the base 17substantially equal to the thickness i of a center link, and of a lengthsubstantially equal to the length of the indented recesses or seats 4 onthe sides of the bloc'k linkso as to snugly fit against the shoulders 5thereof, so that these two parts when a The insidev sembled are rigidand secure;

surfaces of the ears 18 are spaced apart obviously a distancesubstantially equal to the width of the central portion-of the block 2between the parallel longitudinal surfaces of the seats; l fl,'and ifdesired, bracing To secure the chair 15 to its center link 2, the cars18 are shown as provided alined polygonal apertures, havlng a diametersubstantially equal the width of the slot 8 in the center block or link,and through this.

slot and these apertures there may be passed a polygonal bolt 21, havinga head 22 on one end and a threaded portion at its opposite end toreceive a nut 23 passed over the projecting threaded portion of thelocking bolt 21. The polygonal body of the bolt fitting the slot of thecenter block 2 prevents the bolt from rotating, and it also snugly fitsthe apertures in the depending ears.

This chair is provided at its lower portion, and projecting in front ofthe upright seat 16., with a rectangular shoulder 25, and in front ofthis there is spaced a hook portion 26, between which and the face ofthe shoulder '25 is provided a space to receive the lower edge of awasher plate 27, perforated at 28 to receive fastening bolts 29, whichare adapted to pass through a flight plate 30, having a notch at 31 topass over the shoulder 25, which latter locks the flight plate 30against shifting movement when it is clamped between the washer plate 27and the upstanding seat 16 of the chair by the bolts 29. The lower edgeof the flight plate 30 rests, upon a forwardly projecting shoulder '82extending along the front edge of the base of the chair, and carries atits transversely projecting lower corners a set of removable andduplicate wearing shoes 33 which are detachably secured to the plate 30by bolts 34.

From the above it will be'seen'that we have provided a unitary chairwhich is adapted to be securely and rigidly mounted upon a central linkof a chain conveyer, and is readily detachable by the simple removal ofthe bolt or bolts fastening it to the center block link, and it will beseen that it is not necessary to remove a link or links off the chain inorder to remove the flight chair from the chain, nor is it necessary toremove the chair from the link when it is desired to insert a new flightplate 30. By the provision offthe removable and renewable washer plates27, the durability of the flight plate 30 is greatly increasedas thewear of the bolt heads upon this plate is entirely removed and taken bythe washer plate 27.

This application is a division of our application filed December 22,1917, Serial No. 208,466.

What is claimed is:

1. A chair for conveyer chains, consisting of a flat base member havingan upstanding. seat flange with a central locking shoulder, and aremovable flight plate to bear against said seat and notched tointerlock with said shoulder.

- 2. A unitary chair for a conveyer flight, having an upstanding seatflange with a ledge along the edge and a retaining hook in front of saidledge, a flight plate adapted to be applied to said seat and bear onsaid ledge, and a washer disposed between said hook and flight plate andon which the wear of fastening means is taken. 7

3. An attachment, for conveyer chains,

comprising a chair'having a flat base portion to be transversely laidfiat upon the top of a link and having dependent perforated lugs toembrace the sides of the link, a perpendicular seat-flange on the top ofthe base set back from the front edge thereof to form a ledge, a lug atthe central portion of the flange and ledge, and a forwardly extendinghook to underhang a washer, the

flange perforated to. receive bolts for ing a plate thereto.

In testimony whereof we affix our signatures. 1

RALPH IV. PATTEN. DAVID Gr. DAVIS. EDWARD L. BURLEIGH.

attach-

